Allow HBaseRpcMetrics to register custom interface methods
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Key: HBASE-3405
URL: https://issues.apache.org/jira/browse/HBASE-3405
Project: HBase
Issue Type: Improvement
Components: ipc
Reporter: Gary Helmling
Priority: Minor
Opened from comments on HBASE-2997. James Kennedy notes:
{quote}
HBaseRpcMetrics is now logging a WARN message every time it encounters an
unregistered RPC method.
In my case I now get huge log files filled with these warnings because the
hbase-trx transactional extension of HBase uses a subclass of HRegionServer
that adds new interface methods.
It's easy enough to tell log4j to ignore HBaseRpcMetrics output.
However, it would be nice if the Server/HRegionServer HBaseRpcMetrics mechanism
was more extensible so I could pass down new interfaces or grab the
HBaseRpcMetrics object to add interfaces from up top...
{quote}
{{HBaseRpcMetrics}} already has a public method {{createMetrics(Class)}} to
register method counters. We just need a way to expose the metrics class to
allow the region server subclass to call it -- add a {{getMetrics()}} method to
{{RpcServer}} and {{HBaseServer}}.
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